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Praat
Praat is free software for the phonetic analysis of speech, including support for articulatory and speech synthesis. The most current release is version 6.2.05 . It is now available on a variety of operating systems including Window, Macintosh, Raspberry Pi, Chromebook, Linux. Praat now includes many additional functionalities among which are: - Statistical analysis - Listening experiments - Speech manipulations - Learning algorithms.